<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <link rel="stylesheet" type="text/css" href="./style.css">
  <title>MVVM</title>
</head>
<body>

<div id="app" >
  <input v-model="name" v-on:click="sayHi" type="text">
  <h1>我是 {{name}} ，正在自动报数 {{age}}</h1>
</div>
<script src="./index.js" ></script>

</body>
</html>